AAA Sales & Engineering, Inc.
17Patents
9Active
17Granted
42Portfolio score
Filing activity: Jan 21, 1981 → Nov 14, 2011 · 7 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4967511A | Modular shutter assembly | Fixed Constructions | 19 | Expired |
| US4996793A | Louver control apparatus for modular shutter assembly | Fixed Constructions | 17 | Expired |
| US4393960A | Low noise railroad retarder brake shoe structure | Performing Operations; Transporting | 12 | Expired |
| US7392887B2 | Bladder actuator for a railroad retarder | Performing Operations; Transporting | 10 | Active |
| US7325567B2 | Pneumatic retarder acutator valve | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7306077B2 | Fail-safe, weight-responsive skate retarder | Performing Operations; Transporting | 10 | Expired |
| US7140698B2 | Hydraulic control and operation system for a railroad car retarder | Performing Operations; Transporting | 8 | Expired |
| US6422519B1 | Railroad track switch operator | Performing Operations; Transporting | 7 | Expired |
| US6216525A | Distributive retarder test device | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US7649350B2 | Railcar presence detector | Performing Operations; Transporting | 4 | Active |
| US8413770B1 | Systems and methods for retarding the speed of a railcar | Performing Operations; Transporting | 4 | Active |
| US8079309B2 | Devices and systems for controlling travel of a railcar | Performing Operations; Transporting | 4 | Active |
| US8485107B2 | Devices and systems for controlling travel of a railcar | Performing Operations; Transporting | 3 | Active |
| US7530432B2 | Bladder-actuated railroad retarder | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8365876B2 | Air bladder actuator for railroad car retarder | Emerging Cross-Sectional Technologies | 3 | Active |
| US8499900B1 | Electro-hydraulic railcar retarders for controlling the speed of a railcar | Performing Operations; Transporting | 3 | Active |
| US8485105B2 | Devices and systems for stopping travel of a railcar | Performing Operations; Transporting | 2 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.